DE10250713A1 - Ergonomically-optimized cart for transporting school satchels, shopping bags or traveling luggage has four wheels mounted on framework made of aluminum tubes - Google Patents

Abstract

Four aluminum tubes are used. Two long tubes (1,2) form uprights and are connected to two short horizontal tubes (3,4) which can carry the wheels. The horizontal and upright tubes are connected together via an angle iron (6) which extends horizontally across the width of the cart. There are flat cross-pieces (5) further up the upright tubes. Holes (Bohrung) in the tubes accommodate welded rivets (Schweissnahte).

Description

The invention consists in a frame (A) welded from aluminum tubes and slats, one pull-out handle (B), a pull-out shelf (C) and 4 wheels. The suitcase, satchel or the shopping bag is fastened to the frame with a strap.

The wheels (1 trestle and 3 swivel castors (one of which is detectable)) are arranged separately to both pushing the case sideways (school or shopping bag} as well as a common drag to enable. In this special arrangement of the wheels, with the side sliding, lies the inventiveness of the device: the rear wheel on the right is the fixed castor (for left-handers this must The order should be reversed accordingly: the rear wheel should be on the left Roll tight) and hold the cart in the lane. All 3 other wheels are swivel castors and allow steering the cart, both in the normal position of the side Sliding (scheme N), as well as in the overcoming bumps (stairs, Sidewalk,...) to the tilted position of the trailing (Scheme H). By the leadership the cart sideways to the body enables a comfortable, fast gait without the feet - like when dragging - constantly bump into the cart.

what frame A consists of 4 aluminum tubes ( 1 ) + ( 2 ) and ( 3 ) + ( 4 ), an aluminum slat ( 5 ) and an angle plate ( 6 ) at right angles, "chair-shaped" welded together. In this chair, the luggage should be strapped tightly with a strap. The angle plate ( 6 ) is punched so that 2 wheels can be screwed to it. At the top of the vertical arm ( 1 ) a hole is drilled into which the locking button of the handle engages in the fully extended position so that the cart can be pulled at all.

On the outer edge of the horizontal arm ( 4 ) the chair is fitted with a locking button which, in the fully extended position of the base (C), fits into the hole in the arm ( 4 ' ) of the pull-out bottom clicks into place.

The pull-out handle (B) consists of a U-shaped aluminum tube, dimensioned so that it can slide tightly but easily into the tubes] and 2 of frame A. This enables a stepless, optimal adjustment of the handle height for every body size (from schoolchildren to adult size). In the retracted position, the frame is not or hardly higher than the suitcase, so that it does not or hardly take up any space in the luggage rack of the train or in the luggage compartment of the aircraft, either at the bottom of the left arm 1' The handle has a locking head in the hole in the left arm 1 the frame snaps into place and holds the handle in the maximum position for pulling behind

The pull-out shelf (C) consists of two short aluminum tubes ( 3 ' ) + ( 4 ' ) - dimensioned so that it fits the horizontal arms ( 3 ) + ( 4 ) of the frame (A) can slide outside - and an aluminum slat ( 7 ) (same as ( 5 )) welded together. The latte ( 7 ) is perforated so that 2 wheels can be screwed onto it. In the inserted position, the floor is not or hardly wider than the suitcase, so that the frame, or the frame, does not or hardly take up any space in the luggage rack of the train or in the luggage compartment of the aircraft. On the outer edge of the arm ( 4 ' ) a hole is drilled into which the locking button of the pull-out base (C) engages in the fully extended position.

The floor (C) should be extendable, to possibly accommodate more than one piece of luggage to be able to.

Attachments (7):

• - Description
• - Expectations
• - figure A: frame
• - figure B: handle
• - figure C: floor
• - scheme N: Normal promotion position
• - scheme H: position of dragging

Claims (4)

Cart for the transportation of school bags, shopping bags or suitcases characterized in that a stable chassis made of aluminum tubes and slats welded together can be pushed sideways on 4 rollers. Cart according to claim 1, characterized in that the 4 castors (1 fixed castor and 3 swivel castors) are so arranged (for right-handers, the fixed castor at the rear right; For Left-handed, the fixed castor in the back left), that both one for body sideways, comfortable pushing as well as a usual pulling without change possible Claim 2 also applies to attaching the wheels in this disposition directly to the suitcase, the shopping bag or the satchel. Cart according to requirements 1 and 2 characterized in that the handle of a U-shaped curved There is an aluminum tube that can be pulled in and out of the frame, causing the handle height exactly to the user's height can be customized. Cart according to requirements 1, 2 and 3, characterized in that half of the bottom in the frame is retractable and extendable, whereby several pieces of luggage can be carried.